/* Laya Decision Tool — shared styles.
   Vanilla CSS, no build step. Light minimal design with dark accents,
   system font stack, mobile-first responsive layout. */

:root {
  --bg: #f7f7f8;
  --panel: #ffffff;
  --ink: #16161a;
  --muted: #6b6f76;
  --line: #e6e6ea;
  --dark: #16161a;      /* dark accent: header, primary buttons */
  --accent: #4f46e5;    /* indigo for probability bars + highlights */
  --accent-soft: #eef0ff;
  --good: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------- header ---------- */
.site-header {
  background: var(--dark);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand h1 { font-size: 1.15rem; margin: 0; font-weight: 700; letter-spacing: 0.2px; }
.brand h1 a { color: #fff; text-decoration: none; }
.brand .tagline { font-size: 0.8rem; color: #b9bcc4; }
.site-nav a {
  color: #d7d9de;
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.9rem;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: #fff; text-decoration: underline; }

/* ---------- layout ---------- */
.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}
.layout.single { grid-template-columns: 1fr; max-width: 800px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.panel h2 { margin: 0 0 4px; font-size: 1.05rem; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0 0 12px; }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
}

/* ---------- form controls ---------- */
label.field { display: block; margin: 12px 0 4px; font-size: 0.85rem; font-weight: 600; }
textarea, input[type="text"], select {
  width: 100%;
  font: inherit;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
textarea:focus, input[type="text"]:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}
textarea { resize: vertical; min-height: 120px; }
.char-count { text-align: right; font-size: 0.75rem; color: var(--muted); margin-top: 2px; }

.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 18px;
  cursor: pointer;
  background: var(--dark);
  color: #fff;
}
.btn:hover { opacity: 0.88; }
.btn:disabled { opacity: 0.5; cursor: wait; }
.btn.secondary { background: #fff; color: var(--ink); border-color: var(--line); }
.btn.small { padding: 6px 10px; font-size: 0.8rem; font-weight: 500; }
.btn-row { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

/* ---------- question builder ---------- */
.qcard {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin: 12px 0;
  background: #fcfcfd;
}
.qcard-head { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.qcard-head .qkey { width: 110px; flex: none; font-family: var(--mono); font-size: 0.85rem; }
.qcard-head .qtype { flex: 1; }
.qcard-actions { display: flex; gap: 6px; margin-left: auto; }
.icon-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 0.8rem;
  line-height: 1.2;
}
.icon-btn:hover { background: var(--accent-soft); }
.opt-row { display: flex; gap: 8px; margin-top: 8px; }
.opt-row input:first-child { flex: 0 0 34%; }
.opt-row input:nth-child(2) { flex: 1; }
.opt-row .icon-btn { flex: none; align-self: center; }
.add-opt { margin-top: 8px; }

/* ---------- results ---------- */
.meta-line {
  display: flex; gap: 14px; flex-wrap: wrap;
  font-size: 0.82rem; color: var(--muted);
  margin-bottom: 10px;
}
.meta-line strong { color: var(--ink); }
.mock-badge {
  display: inline-block; background: #fef3c7; color: #92400e;
  border: 1px solid #fcd34d; border-radius: 20px;
  padding: 2px 10px; font-size: 0.75rem; font-weight: 700;
}
.res-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 12px 0;
}
.res-card h3 { margin: 0 0 2px; font-size: 0.95rem; }
.res-card .q-instr { color: var(--muted); font-size: 0.82rem; margin: 0 0 10px; }
.winner {
  display: inline-block;
  background: var(--dark); color: #fff;
  border-radius: 8px; padding: 6px 12px;
  font-weight: 700; font-size: 1rem; margin-bottom: 10px;
}
.bar-row { display: flex; align-items: center; gap: 10px; margin: 6px 0; font-size: 0.85rem; }
.bar-row .bar-label { flex: 0 0 34%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { flex: 1; height: 10px; background: #ececf0; border-radius: 6px; overflow: hidden; }
.bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent), #7c6cf0); border-radius: 6px; transition: width 0.4s ease; }
.bar-row .bar-pct { flex: 0 0 52px; text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.conf-line { font-size: 0.78rem; color: var(--muted); margin-top: 8px; }
.big-pct { font-size: 2rem; font-weight: 800; margin: 4px 0 8px; }
.meter { height: 14px; background: #ececf0; border-radius: 8px; overflow: hidden; }
.meter > div { height: 100%; background: linear-gradient(90deg, var(--accent), #22c55e); }
.score-val { font-size: 1.6rem; font-weight: 800; }

.error-box {
  border: 1px solid #f3c2c2; background: #fef2f2; color: var(--bad);
  border-radius: var(--radius); padding: 12px 14px; margin: 12px 0; font-size: 0.9rem;
}
.empty-results { color: var(--muted); font-size: 0.9rem; padding: 24px 0; text-align: center; }

details.req-json { margin-top: 14px; font-size: 0.82rem; }
details.req-json summary { cursor: pointer; color: var(--accent); font-weight: 600; }
details.req-json pre {
  background: #0f1115; color: #d5dae2; padding: 12px;
  border-radius: 8px; overflow-x: auto; font-size: 0.75rem;
  font-family: var(--mono); max-height: 320px; overflow-y: auto;
}

/* ---------- footer / about ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 32px; padding: 18px 20px;
  text-align: center; color: var(--muted); font-size: 0.8rem;
}
.prose p { margin: 0 0 12px; }
.prose ul { margin: 0 0 12px; padding-left: 20px; }
.prose li { margin-bottom: 6px; }
.prose code { font-family: var(--mono); background: #f0f0f3; padding: 1px 5px; border-radius: 4px; font-size: 0.85em; }
.prose a { color: var(--accent); }
.demo-banner {
  background: #fffbeb; border: 1px solid #fcd34d; color: #92400e;
  border-radius: var(--radius); padding: 10px 14px; margin-bottom: 16px; font-size: 0.85rem;
}